private SecurityKey ResolveSecurityKeyCore(SecurityKeyIdentifierClause keyIdentifierClause, bool createIntrinsicKeys) { if (keyIdentifierClause == null) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("keyIdentifierClause")); } SecurityKey securityKey; for (int i = 0; i < this.tokenCount; i++) { securityKey = this.tokens[i].Token.ResolveKeyIdentifierClause(keyIdentifierClause); if (securityKey != null) { return(securityKey); } } if (createIntrinsicKeys) { if (SecurityUtils.TryCreateKeyFromIntrinsicKeyClause(keyIdentifierClause, this, out securityKey)) { return(securityKey); } } return(null); }